The Linux USB input subsystem is a single, harmonized way to manage all input devices. This is a relatively new approach for Linux, with the system being partly incorporated in kernel version 2.4 and ...

A computer is a complex machine. While most of it works on a microscopic level, it certainly has recognizable macroscopic components that contribute to its uses. A computer can be used to do just ...

The following are some basic facts about input loop power sources: The input module usually isn't a loop power source. Although 120V is common for digital loops, other voltages are also used. There ...

In part 1 of this series, “Circuits test key op amp parameters,” we addressed some of the basic op amp (operational amplifier) tests such as V OS (offset voltage), CMRR (common-mode rejection ratio), ...